DL 4662 then B6 1223 at JFK
Nashville → New York → Los Angeles
Timetable, New York time
17:44DL 4662 from Nashville at the gate
16:48B6 1223 to Los Angeles leaves the gate
23 h 04 apart on the timetable, overnight
B6 1223 leaves 23 h 04 after DL 4662 arrives on the timetable: more than half a day, so not a connection we count.